Two trains with 124-Hz horns approach one another. The slower of the two trains has a speed

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Two trains with 124-Hz horns approach one another. The slower of the two trains has a speed of 26 m/s. What is the speed of the fast train if an observer standing near the tracks between the trains hears a beat frequency of 4.4 Hz?
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Physics

ISBN: 978-0321976444

5th edition

Authors: James S. Walker

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